An unpolarized light beam is incident on the polarizer of a...

An unpolarized light beam is incident on the polarizer of a polarization experiment and the intensity of light beam emerging from the analyzer is measured as

100

Lumens. Now, if the analyzer is rotated around the horizontal axis (direction of light) by

30 °

in clockwise direction, the intensity of emerging light will be _______Lumens. An unpolarized light beam is incident on the polarizer of a polarization experiment and the intensity of light beam

An unpolarized light beam is incident on the polarizer of a polarization experiment and the intensity of light beam

Correct answer

Step-by-step solution

An unpolarized light beam is incident on the polarizer of a polarization experiment and the intensity of light beam

Assuming initially axis of Polarizer and Analyzer are parallel

An unpolarized light beam is incident on the polarizer of a polarization experiment and the intensity of light beam

Now emerging intensity $= \dfrac{{I}_{0}}{2}\cos^{2}30 °$

$= 100{\left(\dfrac{\sqrt{3}}{2}\right)}^{2} = 100 \times \dfrac{3}{4} = 75$

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